Dissertations / Theses on the topic 'Pyrimidines'
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Ibrahim, Mohamed M. "Pyrimidine Metabolism in Rhizobium: Physiological Aspects of Pyrimidine Salvage." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc330907/.
Full textBeck, Debrah A. (Debrah Ann). "Pyrimidine Salvage Enzymes in Microorganisms: Labyrinths of Enzymatic Diversity." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc278204/.
Full textRoush, Wendy A. "Pyrimidine Genes in Pseudomonas Species." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4395/.
Full textMélo, Sébastiao José de. "Synthèse, réactivité et propriétés pharmacologiques des fluoro-5 (3H) pyrimidinones-4." Université Joseph Fourier (Grenoble), 1989. http://www.theses.fr/1989GRE18003.
Full textHughes, Lee E. (Lee Everette). "Pyrimidine Metabolism in Streptomyces griseus." Thesis, University of North Texas, 1994. https://digital.library.unt.edu/ark:/67531/metadc278710/.
Full textHughes, Lee E. (Lee Everette). "Pyrimidine Biosynthesis in the Genus Streptomyces : Characterization of Aspartate Transcarbamoylase and Its Interaction with Other Pyrimidine Enzymes." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278797/.
Full textAsfour, Hani. "Regulation of pyrimidine biosynthesis and virulence factor production in wild type, Pyr- and Crc- mutants in Pseudomonas aeruginosa." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5297/.
Full textPatel, Monal V. "The regulatory roles of PyrR and Crc in pyrimidine metabolism in Pseudomonas aeruginosa." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc2875/.
Full textGriffin, Roger J. "Novel biological roles for pyrimidines." Thesis, Aston University, 1986. http://publications.aston.ac.uk/12540/.
Full textLee, Jeong-Hwan. "Synthesis of pyrrolo[2,3-d]pyrimidines and pyrazino[2,3-d]pyrimidines and their biological activities." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=14350.
Full textChang, Mingren. "Characterization of Pyrimidine Biosynthesis in Pseudomonas putida Using Mutant and Wild Type Strains." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc500647/.
Full textClain, Jérôme. "Inhibiteurs de la biosynthèse des pyrimidines chez Plasmodium falciparum : mode d'action et mécanisme de résistance." Paris 5, 1998. http://www.theses.fr/1998PA05P100.
Full textNicolle, Edwige. "Nouvelles thiazolidino [3,2-a] pyrimidines : synthèse, étude structurale et pharmacologique." Université Joseph Fourier (Grenoble), 1990. http://www.theses.fr/1990GRE18007.
Full textBrichta, Dayna Michelle. "Construction of a Pseudomonas aeruginosa Dihydroorotase Mutant and the Discovery of a Novel Link between Pyrimidine Biosynthetic Intermediates and the Ability to Produce Virulence Factors." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4344/.
Full textLanglet, Abraham. "Nitration of oxo-pyrimidines and oxo-imidazoles /." Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-601.
Full textParks, Emma Louise. "Polyfunctionalised pyrimidines and pyrazines from perhalogenated precursors." Thesis, Durham University, 2008. http://etheses.dur.ac.uk/2551/.
Full textSwetnam, S. P. "N.M.R. studies of the protonation of pyrimidines." Thesis, Keele University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372826.
Full textPrieur, Vanessa. "Pyrrolo[2,3-d]pyrimidines : conception, synthèse, fonctionnalisation." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2072/document.
Full textThe pyrrolo [2,3-d]pyrimidines, also known as 7-deazapurines, are an important class of aromatic heterocycles by their biological potencial (antitumor, anti-inflammatory, antibacterial, etc.). Therefore, this skeleton is a source of interest for the organic chemists. A part of the biological activity, these compounds present also outstanding physicochemical properties (UV-fluorescence); enabling new applications in electronics. The last few years, a great number of researches have been put in execution with a view to synthesizing these molecules, where still few general methods exist to obtain pyrrolo [2,3-d] pyrimidines highly substituted. The aim of these works of thesis is to develop different regioselective and chemoselective synthetic strategies to accede to pyrrolo [2,3-d]pyrimidines diversely substituted and furthemore in a reduced number of steps. First has been synthesized a family of 4,5,6-triarylated-7-methylpyrrolo[2,3-d]pyrimidines including the use of two Suzuki-Miyaura's reactions. Also we contemplated the preparation of a series of 2,4,6-triarylated pyrrolopyrimidines where the aryl group at the position 2 has been introduced under Liebeskind-Srogl reaction conditions. Finally the preparation of 4-aminated pyrrolo [2,3-d] pyrimidines from alkynylpyrimidines has been fine-tuned and diverse derivative compounds have been synthesized
Barnes, Samuel. "Synthesis of 2, 4-distributed pyrimidines of possible biological interest." unrestricted, 2008. http://etd.gsu.edu/theses/available/etd-05012008-164917/.
Full textTitle from file title page. Lucjan Strekowski, committee chair; A.L. Baumstark, Jerry Smith, committee members. Electronic text (83 p. : ill.) : digital, PDF file. Description based on contents viewed August 8, 2008. Includes bibliographical references (p. 44-46).
Ratelle, Guillaume. "Incorporation spécifique d'une pyrimidine oxydée dans l'ADN cellulaire." Sherbrooke : Université de Sherbrooke, 2001.
Find full textPERIGNON, JEAN-LOUIS. "Metabolisme des pyrimidines dans les cellules lymphoides humaines." Paris 6, 1987. http://www.theses.fr/1987PA066799.
Full textKumar, Alan P. "Structure-Function Studies on Aspartate Transcarbamoylase and Regulation of Pyrimidine Biosynthesis by a Positive Activator Protein, PyrR in Pseudomonas putida." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4362/.
Full textTkacz, Victoria. "Synthesis of thieno[2,3]-pyrimidines as candidate antileishmanial agents." Connect to resource, 2006. http://hdl.handle.net/1811/6636.
Full textTitle from first page of PDF file. Document formatted into pages: contains 14 p.; also includes graphics. Includes bibliographical references (p. 8). Available online via Ohio State University's Knowledge Bank.
Barnes, Samuel. "Synthesis of 2,4-Disubstituted Pyrimidines of Possible Biological Interest." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/chemistry_theses/10.
Full textPouliquen, Laure. "Deazaguanines (pyrrolo(2,3-d)pyrimidines) as potential antiparastic drugs." Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502340.
Full textWessner, Rachael Ann. "Theoretical Estimation of pKa’s of Pyrimidines and Related Heterocycles." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1469798346.
Full textEntezampour, Mohammad. "Quantitation of Endogenous Nucleotide Pools in Pseudomonas aeruginosa." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc500491/.
Full textSimkovsky, Nadja Melitta. "Synthesis of some potential IKK inhibitors based around a pyrimidine scaffold." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367619.
Full textBrom, Jacques. "Squelettes pyrimidohétérocycliques dérivés d'amino- et d'hydrazino- uraciles." Mulhouse, 1991. http://www.theses.fr/1991MULH0205.
Full textSimon, Gaëlle. "Analogues et dérivés des méridianines : Synthèse et Étude structure-activité biologique." Brest, 2004. http://www.theses.fr/2004BRES2011.
Full textThe marine environment constitues a very promising source for novel and bioactive molecules, and meridianins have been identified among those recently discovered. These indoles with a 2-aminopyrimidine at C-3 can inhibit cyclin-dependent kinases. In order to conduct additionnal biological tests about these 3-(2-aminopyrimidine)indoles, we first synthesised NH meridianin-analogues through two routes: (i) a Miyaura-Suzuki coupling of indol-3-ylboronic acids to 2-amino-4-chloropyrimidine, and (ii) the formation of a 2-amino-pyrimidine by guanidine condensation with enaminones issued from the reaction of N,N-dimethylformamide dimethylacetal (DMF-DMA) with 3-acetylindoles. Then, in a second stage we prepared N-alkyled derivatives of meridianins by applying the same linear synthesis, using pyrrolidine for the formation of enaminones. At last, various derivatives were prepared by replacing the indole with the 1,2,3,9-tetrahydro-4H-carbazol-4-one cycle or using various pyrimidines. Some of these molecules were finally tested against cyclin-dependent kinases (GSK-3 and CDK1) and cell lines (RAJI, DAUDI and K562) as part of cancer-related researches. Other tests about the fixation of barnacle larvae were also performed to investigate the antifouling properties of these new molecules
Black, Duncan Arthur. "Aspects of purine and pyrimidine metabolism." Doctoral thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/26590.
Full textScott, Allelia Worrall. "Pyrimidine Nucleoside Metabolism in Pseudomonads and Enteric Bacteria." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc500941/.
Full textHou, Geneviève. "Synthèse de pyrido et de thiénopyrimidin-4(3H)-ones et de leurs produits de réduction : intérêt potentiel de ces composés dans le traitement de la thrombose." Bordeaux 2, 1997. http://www.theses.fr/1997BOR2E001.
Full textGayon, Eric. "Stratégies pour l'accès rapide à des hétérocycles azotés à partir d'alcools propargyliques." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0017/document.
Full textThe main part of this manuscript deals with the development of new methodologies using iron(III)-catalyzed propargylic substitution, for the synthesis of various nitrogen-containing heterocycles (Δ4-isoxazolines, isoxazoles, cis-acylaziridines and pyrimidines). Firstly, new one-pot syntheses of variously substituted Δ4-isoxazolines and isoxazoles involving cyclization reactions promoted by various carbophilic species ([Au], [Pd], [I+]) have been developed. The weakness of the Δ4-isoxazoline N-O bond has been then exploited, leading to the formation of cis-acylaziridines. New pathways to (Z)-β-enaminones and trisubstituted pyrimidines have also been developed
Do, Khoa Quang. "Design, Synthesis and Binding Studies of Trisubstitutedpyrazolo[3,4-d]pyrimidines." Thesis, Griffith University, 2006. http://hdl.handle.net/10072/367533.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
Full Text
Lee, Yick-Shun. "Pyrimidine Metabolism in Bacteria: Physiological Properties of Nucleoside Hydrolase and Uridine Kinase." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc798309/.
Full textRalli, Pooja. "Impaired virulence factor production in a dihydroorotate dehydrogenase mutant (pyrD) of Pseudomonas aeruginosa." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4940/.
Full textMajumdar, Papiya. "Nitrosative guanosine deamination pyrimidine ring opening implications of effects in homogeneous solution as well as ansiotropic environments /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5967.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed Oct. 16, 2007). Vita. Includes bibliographical references.
Farajallah, Azizeh M. "Focused chemical libraries targeting pyrimidine metabolism in Plasmodium falciparum /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/8652.
Full textMainguet, Samuel. "Caractérisation moléculaire et fonctionnelle du recyclage de l'uracile par l'uracile-phosphoribosyltransférase d'Arabidopsis thaliana." Paris 11, 2009. http://www.theses.fr/2009PA112278.
Full textUridine is the precursor for all pyrimidines, which are required for nucleic acids, polysaccharides, glycerolipids, and glycoproteins synthesis. They can be formed either by the energy-consuming de novo synthesis or by the energy-saving recycling of nucleobases. Lately, Uracil PhosphoRibosylTransferases, which form UMP from uracil in the salvage pathway, were described as unessential enzymes but no mutant of this pathway were studied in plants. A phylogenetic study of the UPRT annotated gene family shows that a single member (UPP) was conserved with the cyanobacteria gene ancestor. Accordingly, it was the only gene validated by complementation in E. Coli and in planta enzymatic activity measurement. We showed that UPP is targeted to plastids. The KO upp mutants displayed a light-dependent drastic pale-green phenotype and their transcriptomic analysis revealed a strong oxidative stress molecular phenotype. We showed a positive correlation between uracil recycling and starch accumulation in upp mutants and 35S:UPP lines. In addition, overexpressors are more tolerant to salt stresses. AmiRNA plants have been designed to silence UPP at later stages. The UPP protein has been expressed and purified in E. Coli for further studies. The UPP-like gene of rice has been cloned, and validated by complementation in E. Coli. OsUPP overexpressing, and amiRNA silenced Oryza lines are generated to study the importance of UPP in this starch storing species. We hypothesize that the energetic cost of uridine synthesis may directly affect the stock of UDP-glucose in plants, required for carbohydrate metabolism and the glycosylation of secondary metabolites involved in oxidative stress response
Sullivan, Shannon M. "Synthesis of 2,4-disubstituted pyrimidine derivatives as potential 5-HT7 receptor antagonist." unrestricted, 2008. http://etd.gsu.edu/theses/available/etd-05052008-153400/.
Full textTitle from file title page. Lucjan Strekowski, committee chair; A.L. Baumstark, Gabor Patonay, Doyle Barrow , committee members. Electronic text (68 p. : ill.) : digital, PDF file. Description based on contents viewed June 23, 2008. Includes bibliographical references (p. 42-430.
Scammells, Peter J., and n/a. "Pyrazolo(3,4-d)Pyrimidines and adenosine receptors: a structure/activity study." Griffith University. Division of Science and Technology, 1990. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050826.141630.
Full textDoise, Muriel. "Synthèse d'oxazolo et d'imidazo(m, n-x)pyridines, pyrimidines et pyrazines." Lille 1, 1991. http://www.theses.fr/1991LIL10129.
Full textLéger, Dominique. "L'aspartate transcarbamylase, enzyme clef de la regulation du metabolisme des pyrimidines." Paris 6, 1987. http://www.theses.fr/1987PA066181.
Full textScammells, Peter. "Pyrazolo(3,4-d)Pyrimidines and adenosine receptors: a structure/activity study." Thesis, Griffith University, 1990. http://hdl.handle.net/10072/365214.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Division of Science and Technology
Full Text
Poulsen, Sally-Ann, and n/a. "Pyrazolo(3,4-d)pyrimidines: Synthesis and Structure-Activity Relationships for Binding to Adenosine Receptors." Griffith University. School of Science, 1996. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050901.161632.
Full textMcIntyre, Neil A. "Synthesis of ring-constrained thiazolylpyrimidines : inhibitors of cyclin-dependent kinases /." St Andrews, 2007. http://hdl.handle.net/10023/353.
Full textZhang, Min. "Study on selective carbon-carbon, carbon-nitrogen, and carbon-oxygen bonds formation starting from alkynes." Rennes 1, 2009. http://www.theses.fr/2009REN1S036.
Full textLa thèse est composée de deux parties. La partie I présente la formation catalytique de liaisons C-C, C-N et C-O : une série d’ethers, de diényle, furanes 2,5-disubstitués, cétones allyliques et γ-fonctionalisées et quinolines polysubstituées ont été préparées à partir d’alcynes avec l’aide initiale d’un catalyseur de ruthenium. La partie II présente la formation de liaisons C-C, C-N, C-O: une variété de tetrahydropyridines, et de 1,3-oxazines ont été synthétisées à partir d’alcynes electrophiles via des réactions à composants multiples
Moldovan, Salomia-Oana. "Ingénierie des systèmes conjugués A-π-D diaziniques et évaluation de leurs propriétés opto-électroniques. Mélamines spirodendritiques à partir des amino-1,3-dioxanes sérinoliques enantiopures. Design, synthèse et analyse structurale." Rouen, 2012. http://www.theses.fr/2012ROUES023.
Full textPoulsen, Sally-Ann. "Pyrazolo(3,4-d)pyrimidines: Synthesis and Structure-Activity Relationships for Binding to Adenosine Receptors." Thesis, Griffith University, 1996. http://hdl.handle.net/10072/365893.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
Science, Environment, Engineering and Technology
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